RAM 2500 Truck 2WD L6-5.9L DSL Turbo VIN 7 (2001)
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Water Pump: Testing and Inspection
DIAGNOSIS AND TESTING-WATER PUMP
A quick test to determine if pump is working is to check if heater warms properly. A defective water pump will not be able to circulate heated coolant
through the long heater hose to the heater core.